Augmentin Amoxicillin; Clavulanic Acid tablets What do amoxicillin/clavulanic acid tablets do?AMOXICILLIN/CLAVULANIC ACID (Augmentin(R)) is a penicillin antibiotic. Amoxicillin kills or stops the growth of bacteria that cause infection. Clavulanic acid is added to amoxicillin to help the amoxicillin to work better. Amoxicillin/clavulanic acid treats many different kinds of infections of the skin, respiratory tract, sinuses, ear, and kidney. It also treats some sexually transmitted disease. Generic amoxicillin/clavulanic acid tablets or chewable tablets are not available.